ORGANIC FARMING :: Pest Management
agri

Borer

Gram pod borer


Symptoms of damage 
  • Defoliation in early stages
  • Larva’s head alone thrust inside the pods and the rest of the body hanging out.
  • Pods with round holes

Identification of pest

Scientific Name - Helicoverpa armigera
  • Eggs – are spherical in shape and creamy white in colour, laid singly
  • Larva - shows colour variation from greenish to brown. Green with dark brown grey lines laterally on the body with lateral white lines and also has dark and pale bands.
  • Pupa – brown in colour, occurs in soil, leaf, pod and crop debris
  • Adult - light pale brownish yellow stout moth. Fore wing grey to pale brown with V shaped speck.Hind wings are pale smoky white with a broad blackish outer margin. 

Management Strategies

  • For pod borers, raise one row of sunflower as intercrop for every 9 rows of pigeon pea and plant maize as border crop.
  • Pheromone traps for Helicoverpa armigera 12/ha 115
  • Bird perches 50/ha
  • Mechanical collection of grown up larva and blister beetle
  • Apply Neem oil 2%
Bore holes on the pod
3
Larva feeding the pod 
p6
  Damaged pod

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Blue butterfly


Symptom of Damage

  • Buds, flowers and young pods with boreholes
  • Presence of slug like caterpillar.
  • Honey dew secretion with black ant movements
Identification of pest
Scientific Name - Lampides boeticus
  • Larva – It is flat and slightly rounded; Pale green with a rough skin.
  • Adult - moth is greyish blue with prominent black spots in the hind wings and a long tail; Ventral side of wings with numerous stripes and brown spots

Management Strategies

  • Avoid dense and close planting
  • Avoid early or late sowing
  •  Regular soil digging cause death of larvae and pupae
  •  Egg parasitoid, Trichogramma spp.,
  •  Larval parasitoids, Hyperencyrtus lucoenephila and Litrodromus crassipes
 

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Grass blue butterfly


Symptom of Damage

  • Buds, flowers and young pods with boreholes and presence of slug like caterpillar.
  • Larval entry hole on the pod is plugged with excreta.

Identification of pest

Scientific Name - Euchrysops cnejus
  • Larva - pale green or yellow with a red line and short black hairs on the body.
  • Adult - butterfly is blue, medium sized with 5 black spots in the hind wings and two    black spots in the inner margin.

Management Strategies

  • ETL 10% affected parts
  • Deep summer ploughing in 2-3 years to eliminate quiescent pupa.
  • Early sowing, short duration varieties.
  • Avoid closer plant spacing.
  • Grow tall sorghum as comparison crop to serve as biological bird perches
  • Collect and destroy larvae and adults to the extent possible
  • Install pheromone traps at a distance of 50 m @ 5 traps/ha for each insect pest.
  • Install Bird perches @ 50/ha.
  • Setting of light traps (1 light trap/5 acre) to kill moth population.
  • Control is achieved by releasing of Trichogramma chlionis at weekly intervals @1.5 lakh/ha/ week for four times.
  • Conserve green lacewing, predatory stink bugs, spider, ants
  • Bt @ 600 g, neem oil/ pungum oil 80 EC @ 2ml/lit
 

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Plume moth


Symptoms of damage

  • Pin head  size holes on  pods
  • Small spiny caterpillars and pupae seen on the pods 

Identification of the pest

Scientific Name - Exelastis atomosa
  • Larva - is greenish brown, fringed with radiating hairs and spines
  • Adult - is delicate, brown coloured small moth with plumed wings

Management Strategies

ETL: 5/plant

  • Bird perches 50/ha
  • Mechanical collection of grown up larva and blister beetle
  • Apply Neem oil 2%
Larva
Pupa Adult
 

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Spotted pod borer

Symptoms of damage

  • Bore holes on the buds, flower or pods
  • Infested pods and flowers are webbed together

Identification of the pest

Scientific Name - Maruca testulalis
  • Larva - Greenish white with brown head. It has two pairs of dark spots on the back of each segment
  • Adult - Forewings- light brown colour with white markings; Hindwings – white colour with brown markings at the lateral edge

Management Strategies

ETL: 5/plant

  • Bird perches 50/ha
  • Mechanical collection of grown up larva and blister beetle
  • Apply Neem oil 2%
DSCN5126

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Spiny pod borer

Symptoms of damage

  • Dropping of flowers and young pods
  • Older pods marked with a brown spot where a larvae has entered

Identification of the pest

Scientific Name - Etiella zinckenella
  • Larva – greenish initially, turns pink before pupation
  • It has 5 black spots on the prothorax

Management Strategies

ETL 10% affected parts

  • Deep summer ploughing in 2-3 years to eliminate quiescent pupa.
  • Early sowing, short duration varieties
  • Avoid closer plant spacing
  • Grow tall sorghum as comparison crop to serve as biological bird perches
  • Install Bird perches @ 50/ha
  • Setting of light traps (1 light trap/5 acre) to kill moth population
  • Control is achieved by releasing of Trichogramma chlionis at weekly intervals @1.5 lakh/ha/ week for four times
  • Conserve green lacewing, predatory stink bugs, spider, ants

 

 
 

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Field bean pod borer


Symptoms of damage

  • The larva bores inside the pod and feeds on the seeds within.

Identification of the pest

Scientific Name - Adisura atkinsoni
  • Larva - greenish having brown lateral marking
  • It has humped anal segment

Management Strategies

  • ETL 10% affected parts
  • Deep summer ploughing in 2-3 years to eliminate quiescent pupa.
  • Early sowing, short duration varieties.
  • Avoid closer plant spacing.
  • Grow tall sorghum as comparison crop to serve as biological bird perches
  • Collect and destroy larvae and adults to the extent possible
  • Install pheromone traps at a distance of 50 m @ 5 traps/ha for each insect pest.
  • Install Bird perches @ 50/ha.
  • Setting of light traps (1 light trap/5 acre) to kill moth population.
  • Control is achieved by releasing of Trichogramma chlionis at weekly intervals @1.5 lakh/ha/ week for four times.
  • Conserve green lacewing, predatory stink bugs, spider, ants
 

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Red gram pod fly


Symptoms of damage

  • Dark brown encrustation on the pod wall
  • Dry pods showing pin head size hole,
  • Seeds shriveled, striped and partially eaten

Identification of the pest

Scientific Name - Melanagromyza obtusa
  • Larva - greenish having brown lateral marking
  • It has humped anal segment
  • Moths are yellowish brown in colour
  • Forewings - yellow coloured with ‘V’ shaped specks 
  • Adult
    • Hindwings – has pale brown markings 
    • Management Put bird perches @ 50/ha
    • Mechanical collection of grown up larva and blister beetle

Management Strategies

  • Bird perches 50/ha
  • Mechanical collection of grown up larva and blister beetle
  • Apply Neem oil 2%
Egg Larva
Pupa Adult
 
 

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Stem fly


Symptoms of damage

  • Drooping of the tender leaves and – seedling wilt
  • Yellowing of young plants
  • Stem become swollen and start ribbing where maggot and pupae are present

Identification of the pest

Scientific Name - Ophiomyia phaseoli
  • Maggot- Small yellow coloured
  • Adult -Tiny black fly

Management Strategies

  • Timely sowing also minimizes the attack of the pest
Sap Feeders

Pod bugs


Symptoms of damage

  • Pods with black spots
  • Shedding of green pods
  • Poorly filled pods with shriveled grains inside

Identification of the pest

Scientific Name - Riptortus pedestris
  • Brownish black and hemispherical 
  • Nymphs – resemble dark brown ants

Management Strategies

  • Bird perches 50/ha
  • Mechanical collection of grown up larva and blister beetle
  • Apply Neem oil 2%

Eggs
Adult

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Lab lab bug or Stink bug


Symptoms of damage

  • Cluster on the  plant  parts and suck the sap

Identification of the pest

Scientific Name - Coptosoma cribraria
  • Nymphs and Adult - sub globular, oval and greenish shield bug
  • It has a characteristic buggy odour

 

 

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Bean Aphids


Symptoms of damage

  • Leaves, inflorescence stalk and young pods  covered with dark coloured aphids
  • Honey dew secretion with black ant movements

Identification of the pest

Scientific Name - Aphis craccivora
  • Nymphs and Adult – dark coloured with cornicles in the abdomen

 

 

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Leaf hopper


Symptoms of damage

  • Leave mottled and yellowish in colour
  • Green colour insects found under surface of leaves

Identification of the pest

Scientific Name - Empoasca kerri
  • Adult – elongate, active, wedge shape, green insects

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Whitefly


Symptoms of damage

  • Leave mottled and yellowish in colour
  • vector of yellow mosaic virus

Identification of the pest

Scientific Name - Bemisia tabaci
  • Adults -are small, yellow bodied insects with white wings which are densely   covered with a waxy powder
  • Nymphs and pupae -are black and round or oval. Pupae have marginal bristles

Management Strategies

  • Shaking the infested plants over the vessels of oil and water or oily cloth gives most effective
 

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Eriyophid mite


Symptoms of damage

  • Vector of red gram sterility  mosaic virus

Identification of the pest

Scientific Name - Aceria cajani
  • Nymphs & Adult – white in colour
  • Very small microscopic and vermiform llike with two pairs of anteriorly  located legs

Management Strategies

  • Shaking the infested plants over the vessels of oil and water or oily cloth gives most effective
 

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Leaf folder


Symptoms of damage

  • Leaves folded together

Identification of the pest

Scientific Name - Anticarsia irrorata
  • Larva- green coloured
  • Adult –   yellowish brown moth with an oblique black line on the wings
Larva
Adult

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Leaf Webber


Symptoms of damage

  • Leaves rolled up apically and become white  and  dried up

Identification of the pest

Scientific Name - Eucosma critica
  • Larva- creamy yellow
 

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Red gram leaf roller


Symptoms of damage

  • Leaves folded together with tender shoots showing bore holes

Identification of the pest

Scientific Name - Caloptilia soyella
  • Larva- stout, long, smooth yellow with brown head
 

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Lab lab leaf miner


Symptoms of damage

  • Leaves with large irregular papery mines on the dorsal surface

Identification of the pest

Scientific Name - Cyphosticha coerulea
  • Larva- orange coloured caterpillar
 
 
 
Flower Feeder

Blister beetle


Symptoms of damage

  • The adult feeds voraciously on buds and flowers.

Identification of the pest

Scientific Name - Mylabris phalerata
  • Eggs - are light yellowish in colour and cylindrical in shape.
  • Larva - Young grubs are white in colour.
  • Adult – Elytra are black in colour with a round orange spot and two transverse wavy   orange bands across the wings.

Management Strategies

  • Manual collection or collection with insect net and killing of adults in kerosenized water appears to be the only possible solution.

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Blister beetle


Symptoms of damage

  • Flower webbed together

Identification of the pest

Scientific Name - Eublemma hemarrhoda
  • Larva - is green with a black head and long white hairs on the body
  • Adult
    • Forewings – yellow colour with purple patches
    • Hind wings -white
 

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Updated on May 2014

 
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